Appeal No. 1999-1729 2
Application No. 08/527,217
THE CLAIMS
Claim 1 is illustrative of appellants’ invention and is reproduced below.
A method for the preparation of a $-lactam compound represented by the
formula
1
in which R is a monovalent hydrocarbon group selected from the group consisting of
alkyl groups having 1 to 20 carbon atoms, cycloalkyl groups having 3 to 20 carbon
atoms, aryl groups having 6 to 20 carbon atoms and aralkyl groups having 7 to 20
2
carbon atoms, and R is a monovalent hydrocarbon group selected from the group
consisting of alkyl groups having 1 to 20 carbon atoms and cycloalkyl groups having 3 to
20 carbon atoms, which comprises the steps of:
(a) mixing an isocyanate compound represented by the formula
1
R NCO,
1
in which R has the same meaning as defined above, and a vinyl ether compound
represented by the formula
2
CH = CH - O - R ,
2
2
in which R has the same meaning as defined above, to form a reaction mixture; and
(b) bringing the reaction mixture under a superatmospheric pressure of at least
2000 atmospheres.
Page: Previous 1 2 3 4 5 6 Next
Last modified: November 3, 2007